/**
 * Created with IntelliJ IDEA.
 * User: happyiu
 * Date: 2022-01-23
 * Time: 17:38
 * Description:
 */
public class TestDemo {
/*    public static void main(String[] args) {
        System.out.println(10/0);
    }*/

    /*public static void main(String[] args) {
        String str = null;
        System.out.println(str.length());
    }*/


    public static void main(String[] args) {



    }
}
